I can't help you with that. Not sure if I just can't hear it with the OEM air box or if my custom tune avoids it. 
@Shoduchi: What kind of tune are you running? I've heard RTech can get around compressor surge to some degree. I've also been aware of the kit BBT can offer to deal with this which isn't necessarily overly expensive.
I'm also curious as to what a car around stage 2 might feel like with a standard intake fitted. I know the likes of Revo can help an engine breathe at high rpm but I also believe that there is a trade off at the lower end by way of a shift in the spread of torque. I have this thought that won't go away and it is that for the 2% of time the car is on track the Revo intake is great and for the road it might be possible that it's not as optimized as the OE intake. It doesn't necessarily make sense to have a part fitted that does what it's supposed to for 2% of the time and it may be the OE intake might sacrifice a small degree of performance on track that may not even be significant and for the other 98% it's spot on.
I would consider refitting it but I don't have a suitable tool to get at the clip down by the turbo.
I'm interested to hear your thoughts, I know there are a handful of people here who have been down the intake route and reverted back to OE.
Cheers.
I'm limited by the petrol I have here (the best I can get at the pump has 98 octanes) so my tuner prefers to leave the tune at (spikes at 1,5 bar) 1,4 bar since he knows it's reliable for all the engine and DSG components. With a better petrol I'd be making +20 BHP from his experience with other similar cars. He can get me 100 octanes petrol but it isn't cheap so I'm only going to consider using it for doing track days in the future, if my budget allows. My tuner worked for Unitronic when they grew a lot in the USA. He does his tunes to make the cars drive like he likes to drive them, for what I realized from talking to him. He was more worried with the DSG than anything else when he tuned the engine, since in Portugal it gets really hot and the box can suffer more wear if I don't take that in mind when pushing the car. I avoid stressing any mechanical component too much, but I know others who get this kind of cars can be too animals driving them.
I asked him if I had any benefit from fitting a cone filter intake (would drive illegal which I don't like) and for him it would be marginal and only at top end, which indeed I don't use 98% of the time. For the daily use it's perfectly fine and tune level doesn't request more air than the OEM air box can provide from looking at the logs.
At the moment I have 2 options if I want to upgrade the intake:
-Get a good cone filter intake and just use it on track;
-Get the TTS air box intake and relocate the battery to the trunk. I'm still considering if a lightweight battery would be enough for my needs since they don't last long (most likely I'd have to charge it regularly) and the better batteries aren't cheap.
Being reasonable I don't do enough track days for all the investment involved so I'm leaving it at it is till next year.
You can get a hose clamp plier set cheap from ebay so you can do whatever you like when you need. I got this set for example:
http://www.ebay.co.uk/itm/261751871926.
If I was in the UK, I'd book with R-Tech and optimize the tune to the car's hardware. From what I read online it would be good to fit the BBT anti-surge K04 compressor and from what I can think of it, due to an improved design it should have an higher threshold to surge, so it's easier for the tuner to prevent it. It's also a lot cheaper than go hybrid K04.
